https://Getbrainplay.app
Performance
· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
88
GRADE
B
FIX
2
REVIEW
8
PASS
10
INFO
2
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
96
100
100
100
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
1.09 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.09 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.004
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.09 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
1.09 s
Page Load Progression
Checks
2210 PASS 8 REVIEW 2 FIX
DThird-Party ImpactAction73% third-party, 0 ms blockingFIX
Third-Party Impact
Action73% third-party, 0 ms blocking
73% third-party, 0 ms blocking
Warning::
Third-party code accounts for 73% of page weight (853.4 KiB of 1.1 MiB)
Info::
Third-party blocking time is low (0 ms)
27%
73%
First-party Third-party
FHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.1 MB transferred, 64 requestsREVIEW
Page Weight Budget
1.1 MB transferred, 64 requests
1.1 MB transferred, 64 requests
Info::
Page weighs 1.9 MB (1.1 MB transferred)
Info::
64 HTTP requests
Info::
Estimated 0.24 g CO2 per page load
1.1 MB transferred
64 requests
0.24 g CO2 per page load
Images 789.8 KiB 67%
JavaScript 243.2 KiB 21%
Fonts 61.5 KiB 5%
HTML 44.5 KiB 4%
Other 20.1 KiB 2%
CSS 16.6 KiB 1%
Other 91 B 0%
Other 88 B 0%
0 2.4 MB 4.9 MB
Under budget
BJS Bundles37 scripts, 87 KB unusedREVIEW
JS Bundles
37 scripts, 87 KB unused
37 scripts, 87 KB unused
Warning::
https://getbrainplay.app/assets/client-B_GI__IY.js: 45 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://getbrainplay.app/assets/index-jl_gzfVT.js: 42 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 87 KB
87 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://getbrainplay.app/assets/client-B_GI__IY.js | 55 KB | 45 KB (82%) | ✓ | 1st |
| https://getbrainplay.app/assets/index-jl_gzfVT.js | 110 KB | 42 KB (38%) | ✓ | 1st |
| https://getbrainplay.app/assets/AdSlot-BwIAbYya.js | 1 KB | — | ✓ | 1st |
| https://getbrainplay.app/assets/_lang.index-DKYt6mcR.js | 0 KB | — | ✓ | 1st |
| https://getbrainplay.app/assets/not-found-i5RsCZif.js | 0 KB | — | ✓ | 1st |
| https://getbrainplay.app/assets/invariant-CgFvOqN2.js | 0 KB | — | ✓ | 1st |
| https://getbrainplay.app/assets/link-Cc329bSV.js | 5 KB | — | ✓ | 1st |
| https://getbrainplay.app/assets/matchContext-CCdaGWQh.js | 0 KB | — | ✓ | 1st |
| https://getbrainplay.app/assets/preload-helper-BzhiQ0gP.js | 2 KB | — | ✓ | 1st |
| https://getbrainplay.app/assets/jsx-runtime-CZFPacut.js | 0 KB | — | ✓ | 1st |
Consider code splitting or tree shaking to reduce unused code.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
Consider code splitting or tree shaking to reduce unused code.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
HTTP/3 (QUIC)
HTTP/3 not advertised
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
CDocument CompressionActionDocument response served uncompressedREVIEW
Document Compression
ActionDocument response served uncompressed
Document response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
BAsset Compression1 of 1 asset host serve text uncompressedREVIEW
Asset Compression
1 of 1 asset host serve text uncompressed
1 of 1 asset host serve text uncompressed
Warning::
fonts.googleapis.com serves text assets uncompressed (assets: 4)
The sampled response carries a text content type but no Content-Encoding, so the bytes go over the wire raw. Text compression typically removes 70-80% of a JS or CSS payload -- this is the single cheapest transfer win available on this host.
Got: fonts.googleapis.com (text/css)
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
Main HTML Cache-Control
No Cache-Control header on main HTML response
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
BPage Weight Inventory64 resources · 1.1 MB · 87 KB savings availableREVIEW
Page Weight Inventory
64 resources · 1.1 MB · 87 KB savings available
64 resources · 1.1 MB · 87 KB savings available
Warning::
Page weight 1.1 MB exceeds 1 MB target by 152 KB
Got: 1.1 MB Expected: ≤ 1 MB
Info::
~87 KB of savings available
Warning::
21 third-party resources (73% of weight)
64 resources · 1.1 MiB · 21 third-party 151.9 KiB over 1MB target
Image 69% · 809.5 KiB
JavaScript 21% · 243.2 KiB
Font 5% · 61.5 KiB
Document 4% · 44.5 KiB
CSS 1% · 16.6 KiB
Other 0% · 601 B
~86.8 KiB of savings available
Remove unused JavaScript: 86.8 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 64 resources | 1.1 MiB | ||||||
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Image Optimization17 images, 0 KB saveablePASS
Image Optimization
17 images, 0 KB saveable
17 images, 0 KB saveable
Info::
All images are well-optimized
17 images 790 KB
0 oversized -0 KB
0 legacy format
0 missing dimensions CLS risk
A+JS Execution Cost268ms total JS executionPASS
JS Execution Cost
268ms total JS execution
268ms total JS execution
Info::
https://getbrainplay.app/en: 112ms CPU time
Info::
https://getbrainplay.app/assets/index-jl_gzfVT.js: 86ms CPU time
Info::
Unattributable: 71ms CPU time
Main Thread Breakdown
Script Evaluation 36% Other 34% Style & Layout 20% Rendering 5%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://getbrainplay.app/en | 112ms | 9ms | 6ms | 1st |
| https://getbrainplay.app/assets/index-jl_gzfVT.js | 86ms | 82ms | 0ms | 1st |
| Unattributable | 71ms | 2ms | 0ms | 1st |
A+Font Loading2 fonts (61 KB)PASS
Font Loading
2 fonts (61 KB)
2 fonts (61 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
2
61 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
font woff2 swap
Size 21 KB
Load time 36 ms
Start 782 ms
Risk FOUT — text flashes from fallback to web font
font woff2 swap
Size 40 KB
Load time 68 ms
Start 783 ms
Risk FOUT — text flashes from fallback to web font
Optimization checklist
- Preload critical fonts (priority=high)
- Use woff2 format for all fonts
- Set font-display to swap, optional, or fallback
- Subset large fonts (≤100 KB each)
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Server Response Intelligence1 server-response signal(s) detectedPASS
Server Response Intelligence
1 server-response signal(s) detected
1 server-response signal(s) detected
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall64 requests over 1169msINFO
Network Waterfall
64 requests over 1169ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization19 images, 0 KB total, 0 KB wastedINFO
Image Optimization
19 images, 0 KB total, 0 KB wasted
Image Optimization Audit
Total Images
19
Total Size
0 KB
Oversized
6
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.